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The suspects tied up the mother Maria Rosalina Milan and her children, ransacked the house, and fled with the youngest child.
"I just want my brother back," said 16-year-old brother Jose Barraza.
But not only does Barraza want his little brother home safely, he wants the kidnappers brought to justice.
"They took my little brother for no reason," he said.
Barraza was not at the house during the time of the home invasion.
An Amber Alert was issued, even though there is no vehicle description or license plate number. The alert frees up additional resources for the search effort.
Authorities believe the suspects may be headed to Mexico, if they are not there already.
No motive has been released in the case, and police believe the suspects were complete strangers to the entire family. The boy's mother said before the suspects fled, they told her they were taking him to Mexico to kill him.
Family members said the home feels absolutely empty without the 3-year-old.
"We play around with him, but now that he's gone, we can't do nothing," Barraza said, fighting back tears.
His mother is assisting police put together a composite sketch of the suspects.
"We're all just trying to think, and just praying that they just have him and they bring him, drop him off anywhere," said neighbor Estela Magana.
"No one's going to do anything, we just want him back."
Briant Rodriguez is a Hispanic boy, about 3 feet tall, 40 pounds, and was last seen wearing a yellow shirt with blue sleeves, blue striped shorts and black sandals. He has long brown hair and brown eyes.
One suspect is described as a light-skinned Hispanic male adult, about 18 years old, skinny build, about 5 feet, 8 inches tall, and was wearing a black ball cap, blue jeans and a green T-shirt.
The second suspect is described as a light-skinned Hispanic male adult, about 24 years old, skinny build, about 5 feet, 10 inches tall, and was wearing a black shirt, black pants, black boots and a white bandana.
Both men were reportedly armed with handguns.
Anyone with information is urged to call San Bernardino County Sheriff's deputies at (866) 346-7632.